EP2156915B1 - Dispositif de controle de la temperature d'une brasure avec un dispositif de verrouillage de la temperature - Google Patents

Dispositif de controle de la temperature d'une brasure avec un dispositif de verrouillage de la temperature Download PDF

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Publication number
EP2156915B1
EP2156915B1 EP07743387.8A EP07743387A EP2156915B1 EP 2156915 B1 EP2156915 B1 EP 2156915B1 EP 07743387 A EP07743387 A EP 07743387A EP 2156915 B1 EP2156915 B1 EP 2156915B1
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EP
European Patent Office
Prior art keywords
temperature
rotating shaft
distal end
knob
lock key
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07743387.8A
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German (de)
English (en)
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EP2156915A4 (fr
EP2156915A1 (fr
Inventor
Toshikazu Mochizuki
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Hakko Corp
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Hakko Corp
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Publication date
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Publication of EP2156915A1 publication Critical patent/EP2156915A1/fr
Publication of EP2156915A4 publication Critical patent/EP2156915A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/04—Heating appliances
    • B23K3/047—Heating appliances electric
    • B23K3/0478—Heating appliances electric comprising means for controlling or selecting the temperature or power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/02—Soldering irons; Bits
    • B23K3/03—Soldering irons; Bits electrically heated
    • B23K3/033—Soldering irons; Bits electrically heated comprising means for controlling or selecting the temperature or power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08—Auxiliary devices therefor

Definitions

  • the present invention relates to a temperature controller usable with a solder handling device typified by a solder iron, a solder removal device or the like, and capable of appropriately changing and locking a set temperature of a tip, a nozzle or the like of the solder handling device.
  • the present invention relates to a temperature controller designed to mechanically lock the set temperature (see US-A-6 833 531 ).
  • a tool for manually handling solder includes various devices other than the soldering iron, such as a solder removal device and a hot-air blowing device.
  • the solder removal device is designed to re-melt and remove a solder which has already been soldered.
  • the hot-air blowing device is designed to blow hot air against a solder to melt the solder, and used for both soldering and solder removal. In this specification, they will be collectively referred to as "solder handling device”. Further, an operation of handling solder using a solder handling device will be referred to as "solder handling operation”.
  • solder handling operation is performed at an adequate temperature.
  • This adequate temperature depends on a type of solder, a type of solder handling device, a size and a shape of a tip or the like of a solder handling device, or an allowable temperature limit of an electronic component, etc.
  • solder containing almost or absolutely no lead has been regarded as advantageous in view of the global environment, and increasingly used.
  • the lead-free solder has a melting point greater than that of tin-lead eutectic solder by several tens of degrees Celsius, so that an adequate temperature in case of using the lead-free solder becomes greater than that in case of using the tin-lead eutectic solder.
  • solder handling device intended to meet the above need and equipped with a temperature controller operable to adjust a set temperature.
  • a solder handling operator is likely to perform a solder handling operation at an inadequate set temperature. For example, due to operator's enthusiasm to aim at improvement in operating efficiency, the operator is liable to set a set temperature higher than an adequate temperature. The reason is that, as a set temperature becomes higher, solder is more easily melted to provide more improved operating speed. This usage is undesirable, because it causes a negative effect, such as thermal damage of electronic components.
  • the temperature controller may have a mechanism for locking a set temperature once it is set (temperature lock mechanism), wherein only a specific person (hereinafter referred to as "set-temperature manager”) is permitted to release the temperature lock (see, for example, the following Patent Document 1).
  • set-temperature manager a mechanism for locking a set temperature once it is set
  • a system disclosed in the Patent Document 1 comprises a setting card.
  • This setting card has an identification code indicating that an owner of the setting card is a set-temperature manager. Further, a change of a set temperature is permitted only when the setting card is inserted into a card slot provided in a body of a temperature controller and then the identification code is properly authenticated.
  • the set-temperature manager can appropriately set a set temperature after inserting the setting card into the card slot, and then lock the set temperature by withdrawing the setting card from the card slot.
  • the system disclosed in the Patent Document 1 is a digital type configured such that a value of a set temperature is input from a keyboard, and the identification code of the setting card is electrically authenticated.
  • the input configuration for a set temperature includes an analog type.
  • one type comprising a variable resistor, wherein a set temperature is changed according to a resistance value of the variable resistor.
  • This variable resistor includes a rotating shaft, wherein the resistance value is changed according to a rotation angle of the rotating shaft.
  • the rotating shaft is coupled to a rotary knob which is adapted to be rotated to allow the rotation angle of the rotating shaft to be changed.
  • the temperature lock mechanism using the setting card as in the Patent Document 1 is unsuitable for such an analog type.
  • the temperature lock in the analog type has heretofore been performed by physically fixing the knob.
  • a mechanism in which a locking bolt or a locking nut is tightened using a specialized tool (wrench or driver) to thereby prohibit the rotation of the knob.
  • the present invention provides a solder handling temperature controller designed to control a solder handling device including a soldering iron to have a given set temperature, under a condition that it is in connected relation with the solder handling device or incorporated in the solder handling device.
  • the solder handling temperature controller comprises: a body of the solder handling temperature controller; a rotating shaft housed in the body and adapted to be rotatable about an axis thereof; a set temperature changing means adapted to change the set temperature according to a rotation angle of the rotating shaft; a rotary knob supported by the body in coaxial relation with the rotating shaft and in a rotatable manner relative to the rotating shaft; and a temperature lock key adapted to be selectively insertable into and withdrawable from the body in a position coaxial with the rotating shaft and the knob, and, in an inserted state thereof, to mechanically couple the rotating shaft and the knob together to allow them to be interlockingly rotated, wherein, in a state where the temperature lock key is withdrawn from the body, the coupling between the rotating shaft and the knob is released to prohibit the change of the set temperature by the rotation of the knob.
  • the rotating shaft and the knob are coupled together to allow them to be interlockingly rotated.
  • the rotation angle of the rotating shaft can be changed, i.e., the set temperature can be changed (release of temperature lock).
  • the coupling between the rotating shaft and the knob is released.
  • the knob is supported by the body in a rotatable manner relative to the rotating shaft, so that, even if the knob is rotated in this state, it will just undergo a lost motion without causing any rotation of the rotating shaft. This means that the change of the set temperature is precluded to establish the temperature lock.
  • the establishment and release of the temperature lock can be easily performed only through the insertion and withdrawal of the temperature lock key.
  • FIG. 1 is a perspective view of a solder handling temperature controller having a temperature lock mechanism, according to a first embodiment of the present invention.
  • controller 1 an outline of the solder handling temperature controller (hereinafter referred to as "controller 1") will be described.
  • the controller 1 is used in combination with a solder handling device 2 adapted to be connected thereto.
  • a soldering iron is shown in FIG. 1 by the two-dot chain line as a representative example of the solder handling device 2, it may be appropriately replaced with a solder removal device, a solder heating hot-air blowing device or the like.
  • the controller 1 is adapted to perform a temperature control of a heating mechanism incorporated in the solder handling device 2. Specifically, the controller 1 is operable to supply electric power to the solder handling device 2 to heat heating means (e.g., heater) incorporated in the solder handling device 2.
  • the solder handling device 2 incorporates a temperature sensor 4 which is operable to detect a temperature or temperature-related information (e.g., voltage) of a heating target portion (in a case using a soldering iron, a soldering tip) and transmit the detected temperature or temperature-related information to a control circuit 71 (see FIG. 2 ) of a body 10.
  • a user pre-designates a desired temperature of the heating target portion and sets the desired temperature in the control circuit 71.
  • the control circuit 71 is operable to cross-check the set temperature with the temperature or temperature-related information transmitted from the temperature sensor 4 to adjust an amount of electric power to be supplied to the solder handling device 2, in such a manner as to allow a temperature of the heating target portion to converge to the set temperature.
  • set-temperature manager when it is necessary to discriminate between a user having authority to input and change a set temperature, and a user who lacks the authority, the former and the latter will be referred to as “set-temperature manager” and “operator”, respectively.
  • the controller 1 comprises a generally rectangular parallelepiped-shaped body 10, and a rod-shaped temperature lock key 40 adapted to be selectively attachable into and detachable from the body 10.
  • the body 10 has a housing made up of a front panel 11 covering a front thereof and two side panels 12 covering remaining sides including a rear and a bottom thereof.
  • a power switch 13 is provided on a top wall of the body 10.
  • a power cord 81 (see FIG. 2 ) is led out through a rear wall of the body 10.
  • the front panel 11 has a window 15, a knob 20, a power indicator lamp 16, a calibration offset button 18 and a socket 17 which are lined up in this order from an upper side thereof.
  • the window 15 is provided as a means to indicate a current set temperature, and formed as a through-hole penetrating between front and back surfaces of the front panel 11.
  • a scale board 60 marked with a temperature scale 67 is disposed inside the body 10 and on an inner side of the window 15.
  • the scale board 60 is adapted to be rotated coaxially with the knob 20 in conjunction with a change of a set temperature, so as to allow a specific mark on the temperature scale 67 corresponding to the post-change set temperature to be aligned with the window 15.
  • a temperature indicated through the window 15 allows a user to recognize a current set temperature. Further, the indicated temperature is referred to when a set-temperature manager changes a set temperature and when the set-temperature manager performs an after-mentioned calibration. This indicated temperature will also be referred to particularly as "indicated set temperature”.
  • the knob 20 is supported to protrude from an outer surface of the front panel, in a rotatable manner about an axis thereof extending in a direction approximately perpendicular to the front panel 11.
  • the knob 20 is a rotary input means to allow the set-temperature manager to input or change a set temperature.
  • the knob 20 is uncoupled to an inside of the body 10, so that, even if a user rotates the knob 20, the knob 20 will undergo a lost motion.
  • the power indicator lamp 16 is adapted to be lighted when electric power is supplied to the body 10, and the power switch 13 is turned on.
  • the calibration offset button 18 (calibration switch) is a push button-type switch. In a calibration mode for correcting a deviation between an indicated set temperature and an actual temperature of the controlled object, the calibration offset button 18 is operated by the set-temperature manager. An operation procedure and function of the calibration offset button 18 will be described later together with a description of the calibration mode.
  • the socket 17 is a body-side connector for connecting the solder handling device 2 to the body 10.
  • the solder handling device 2 is provided with a plug 3 adequately engageable with the socket 17.
  • the transmitting/receiving of electric power and sensor signals is performed via the plug 3 and the socket 17.
  • the temperature lock key 40 is a component prepared separately from the body 10, and adapted to be selectively attachable to and detachable from the body 10. In the non-inserted state of the temperature lock key 40, the knob 20 undergoes a lost motion, as mentioned above. However, upon insertion of the temperature lock key 40, the knob 20 effectively functions to enable a change of a set temperature. More specifically, the knob 20 has, in an axial region thereof, an insertion hole for the temperature lock key 40 and the temperature lock key 40 can be insertedly attached in such a way that a distal end member of the temperature lock key 40 is inserted into the insertion hole.
  • FIG. 2 is a side view of an inside of the body 10 (a side view in a state after the side panel 12 on a front side of the drawing sheet is detached).
  • the knob 20 is shown in a vertical section.
  • a power transformer 80 and a control board 70 connected to the power cord 18 and the power switch 13 are housed in the body 10.
  • the control board 70 is disposed on the inner side of and in an approximately parallel relation to the front panel 11.
  • the power indicator lamp 16, the socket 17 and the calibration offset button 18 are connected to the control board 70.
  • the control circuit 71 including a CPU (not shown) is also mounted thereto to perform the aforementioned temperature control.
  • variable resistor 75 (set temperature changing means) is mounted on the control board 70.
  • the control circuit 71 is operable to electrically read a resistance value of the variable resistor 75 to read a post-setting set temperature according to the read resistance value.
  • a rotating shaft 77 coaxial with a support shaft for the knob 20 is provided to protrude from the variable resistor 75 toward the front panel 11.
  • the variable resistor 75 is configured such that the resistance value is changed according to a rotation angle of the rotating shaft 77.
  • the scale board 60 is disposed between the front panel 11 and the control board 70, in such a manner that a plate-like portion 61 thereof becomes parallel to the front panel 11 and the control board 70.
  • the plate-like portion 61 of the scale board 60 has a circular disc shape.
  • the temperature scale 67 is marked in a position on the plate-like portion 61 corresponding to the window 15 of the front panel 11.
  • the temperature scale 67 may be directly printed or inscribed on the plate-like portion 61 or may be formed by putting a separate sheet, such as a sticker, printed with the scale.
  • the temperature scale 67 may be one of numerical characters, scale lines and a mixture thereof.
  • a rotation axis of the scale board 60 (centerline of a boss 62) is coaxial with the rotating shaft 77 of the variable resistor 75, and the scale board 60 and the rotating shaft 77 are fixed together to achieve this coaxial relation.
  • the scale board 60 and the rotating shaft 77 are integrally rotated. Further, when the rotating shaft 77 is placed at a certain rotation angle, a set temperature corresponding to a resulting resistance value is set.
  • the boss 62 of the scale board 60 protrudes outwardly from the outer surface of the front panel 11.
  • the front panel 11 has a cylindrical-shaped knob support shaft 11a formed to surround the boss 62 in coaxial relation with the boss 62.
  • the knob support shaft 11a has a pawl formed on the side of a distal end thereof to protrude in a radially inward direction thereof.
  • the knob 20 is formed in a generally cylindrical shape, and an inner peripheral surface thereof is fitted on an outer peripheral surface of the knob support shaft 11a. This makes it possible to allow the knob 20 to be slidingly rotated around the knob support shaft 11 a in a smooth manner.
  • the knob 20 is formed with an engagement pawl 21 engageable with the pawl at the distal end of the knob support shaft 11a, so that the knob 20 is kept from dropping off from the knob support shaft 11a by an engagement therebetween.
  • FIG. 3 is an exploded perspective view of the temperature lock key 40, and the knob 20 and the scale board 60 which are components related to the temperature lock key 40.
  • the temperature lock key 40 has a base end member 41 located on the side of one of axially opposed ends thereof and adapted, in an inserted state thereof, to be exposed, and a distal end member 50 located on the side of the other end, and adapted, in the inserted state, to be sunk into a side of the body 10 which includes the knob 20.
  • the base end member 41 and the distal end member 50 are rotatable relative to each other about an axis of the temperature lock key 40.
  • the distal end member 50 has a first distal end portion 52 located on the side of a most distal end of the temperature lock key 40, and a second distal end portion 53 located on the side of the base end member 41 relative to the first distal end portion 52.
  • the first distal end portion 52 is made up of a large number of (in the first embodiment, thirty-six) spline grooves extending in an axial direction of the temperature lock key 40.
  • the second distal end portion 53 is formed in a generally octagonal shape in cross-section perpendicular to the axis (see FIG. 5 ).
  • the inner peripheral surface of the knob 20 has a knob-side fitting region 22 formed in a generally octagonal shape in cross-section perpendicular to the axis and adapted to allow the second distal end portion 53 to be fitted thereinto.
  • the boss 62 of the scale board 60 has an inner peripheral surface serving as a rotating shaft-side fitting region 66 formed with a large number of spline grooves 65 adapted to allow the spline grooves of the first distal end portion 52 to be fitted thereinto.
  • the first distal end portion 52 of the temperature lock knob 40 is fitted into the spline grooves 65 of the scale board 60, and the second distal end portion 53 is fitted into the knob-side fitting region 22 of the knob 20, so that the knob 20 and the scale board 60 can be integrally rotated through the distal end member 50 of the temperature lock key 40.
  • the rotating shaft 77 of the variable resistor 75 and the scale board 60 are adapted to be integrally rotated, as mentioned above.
  • the knob 20 and the rotating shat 77 can also be integrally rotated.
  • the boss 62 of the scale board 60 has four cutouts 63 formed on the side of a distal end thereof at even intervals in a circumferential direction thereof to extend in an axial direction thereof.
  • the boss 62 also has an O-ring groove 64 formed in an outer peripheral surface thereof at a position adjacent to the distal end.
  • An O-ring 68 (see FIG. 2 ) is attached to the O-ring groove 64.
  • FIG. 4 is a vertical sectional view of the temperature lock key 40.
  • the temperature lock key 40 consists primarily of the base end member 41, and the distal end member 50 prepared separately from the base end member 41.
  • Each of the base end member 41 and the distal end member 50 is made of a resin material.
  • the distal end member 50 further has an iron core 59 provided on a radially inward side thereof to ensure a strength thereof.
  • the base end member 41 has a generally cylindrical shape, and an outer peripheral surface of the base end member 41 is formed as if it is chipped off along a pair of mutually parallel planes extending in the axial direction (see FIG. 5 ) so that the set-temperature manager can easily grip the base end member 41.
  • the base end member 41 has a plate-like protruding portion 42 provided on a base edge thereof and formed with a strap hole 43 suited to allow a strap (not shown) or the like to pass therethrough.
  • the base end member 41 has an inner peripheral surface defining a distal-end-member insertion hole 45 fittable with a base end of the distal end member 50.
  • the base end member 41 also has an engagement portion 46 formed in a vicinity of a base end of the distal-end-member insertion hole 45 to protrude in an inward direction thereof.
  • the distal end member 50 has a distal end member-side base portion 54 formed on the side of the base end member 41 relative to the second distal end portion 53 and adapted to be inserted into the distal-end-member insertion hole 45 of the base end member 41. Dimensions for fitting between the distal-end-member insertion hole 45 and the distal end member-side base portion 54 are set to establish loose fitting.
  • the distal end member-side base portion 54 has an engagement portion 55 formed on the side of a base end of the distal end member-side base portion 54 and adapted to be engaged with the engagement portion 46. Further, a cutout 56 is provided in a vicinity of the engagement portion 55 to facilitate a reduction in diameter of the engagement portion 55.
  • An inner peripheral surface of the distal end member 50 is formed to define an iron-core holding region 51 adapted to receive and hold the iron core 59.
  • the base end of the distal end member 50 (shown by two-dot chain line) holding the iron-core holding region 51 is inserted into the distal-end-member insertion hole 45 of the base end member 41.
  • the insertion operation will be continued, so that a diameter of the outer peripheral surface in the vicinity of the engagement portion 55 is reduced to allow the engagement portion 55 to pass through the engagement portion 46 and then come into engagement with the engagement portion 46.
  • the base end member 41 and the distal end member 50 are integrated together and hardly separated from each other.
  • the distal-end-member insertion hole 45 and the distal end member-side base portion 54 are in loose-fitting relation, and therefore the base end member 41 and the distal end member 50 become rotatable to each other about the axis.
  • FIG. 5 is a sectional view taken along the line V-V in FIG. 4 .
  • the outer peripheral surface of the second distal end portion 53 has a generally octagonal shape.
  • the iron core 59 is provided to extend along the inner peripheral surface of the second distal end portion 53, a gap is formed between the iron core 59 and the inner peripheral surface.
  • Cutouts 53a are alternately formed in eight facets defining the regular 8-sided shape to penetrate between the inner and outer peripheral surfaces (additionally see FIGS. 3 and 4 ).
  • the cutouts 53a and the gap relative to the iron core 59 allow the second distal end portion 53 to be deformed in a radially inward direction relatively easily and to have a restoring force if the radially inward deformation occurs.
  • an insertion force can be reduced while absorbing a manufacturing error of fitting between the second distal end portion 53 and the knob-side fitting region 22.
  • the second distal end portion 53 and the knob-side fitting region 22 can be easily placed in close contact relation so as to adequately transmit torque.
  • the outer peripheral surface of the second distal end portion 53 may have any polygonal shape other than an 8-sided shape.
  • the knob-side fitting region 22 may be formed in a shape conforming to the polygonal shape. If the outer peripheral surface of the second distal end portion 53 is formed in one of a 3-sided shape, a 4-sided shape and a 5-sided shape, respective phases of the second distal end portion 53 and the knob-side fitting region 22 are hardly aligned with each other. Conversely, the outer peripheral surface of the second distal end portion 53 is formed in an 11 or more-sided shape, a high manufacturing accuracy is required, although the phase alignment becomes easy.
  • the outer peripheral surface of the second distal end portion 53 roughly in any one of 6 to 10-sided shapes.
  • FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4 .
  • the first distal end portion 52 has thirty-six spline grooves formed at even intervals in a circumferential direction thereof.
  • the spline fitting using such a large number of (preferably, twenty or more) spline grooves makes it possible to significantly reduce a phase misalignment when the first distal end portion 52 of the temperature lock key 40 is fitted into the rotating shaft-side fitting region 66 of the scale board 60.
  • a user connects a plug 3 of a solder handling device 2 depending on a type of operation, to the socket 17. Further, the user connects the power cord 81 to a power supply, and turns on the power switch 13. Then, the user checks the power indicator lamp 16, because it should be consequently lightened.
  • the user performs the after-mentioned calibration according to need, and then inputs a set temperature depending on the connected solder handling device 2 and the type of operation.
  • This input is performed by a set-temperature manager owning or managing the temperature lock key 40.
  • the set-temperature manager inserts the temperature lock key 40 into the body 10. Consequently, the function of the knob 20 becomes effective.
  • the set-temperature manager rotates the knob 20 to adjust the temperature scale 67 to a position where a desired set temperature is indicated through the window 15.
  • the rotating shaft 77 of the variable resistor 75 is also rotated, and the variable resistor 75 has a resistance value corresponding to the post-adjustment indicated set temperature.
  • the set-temperature manager withdraws the temperature lock key 40 from the body. Then, an operator performs a soldering-related operation, while handling the solder handling device 2 in a state after the temperature setting is adequately performed in the above manner. In this state, even if the operator attempts to rotate the knob 20 so as to increase the set temperature, due to operator's enthusiasm to aim at improvement in operating efficiency, it is unable to change the set temperature, because the temperature lock key 40 is in the non-inserted state and thereby the knob 20 will undergo a lost motion. Thus, a solder handling operation at an adequate temperature will be maintained and continued, so that deterioration in quality of the solder handling operation is effectively suppressed.
  • the scale board 60 cannot be rotated even if the base end member 41 is rotated, because the base end member 41 is rotatable relative to the distal end member 50, so that, even if the base end member 41 is rotated, it will undergo a lost motion.
  • the temperature lock key 40 cannot be used as substitute for the knob 20, and the scale plate 60 (or the rotating shaft 77) can be rotated (the set temperature can be changed) only if the knob 20 is rotated.
  • the control circuit 71 is operable to execute a calibration mode for correcting a deviation between an indicated set temperature and an actual temperature of a controlled object. Generally, such a deviation becomes larger along with an increase in duration of use. Thus, it is desirable to perform an operation of (calibration for) appropriately eliminating or reducing the deviation.
  • a function of the controller 1 in the calibration operation will be described below in line with a calibration process.
  • a set-temperature manager turns on the power switch 13 and waits until a temperature of the solder handling device 2 becomes stable.
  • the set-temperature manager inserts the temperature lock key 40 into the body 10, and rotates the knob 20 to adjust an indicated set temperature to a given calibration temperature (e.g., 400°C). Then, the set-temperature manager waits until the temperature of the solder handling device 2 becomes stable.
  • a given calibration temperature e.g. 400°C
  • the set-temperature manager presses the calibration offset button 18.
  • the control circuit 71 enters the calibration mode.
  • the control circuit 71 temporarily stores a temperature (first temperature T1) at a time when the calibration offset button 18 is pressed (practically, the information to be stored may be a resistance value of the variable resistor 75 corresponding to the temperature T1; This may be applied to the following procedure). If the calibration temperature is 400°C, the first temperature T1 will be about 400°C.
  • the set-temperature manager or other user directly measures a temperature of a controlled object of a solder handling device 2 separately. Given that an actual temperature Tr is 395°C.
  • the set-temperature manager appropriately rotate and adjust the knob 20 in such a manner that a temperature of the controlled object being directly measured separately (indicated value of a thermometer) converges to the given calibration temperature and becomes stable under control. If the actual temperature Tr is lower than the indicated set temperature by 5°C as in the above example, the set-temperature manager will adjust an indicated set temperature to a scale value higher than the calibration temperature by about 5°C, to allow the deviation to be eventually corrected.
  • the set-temperature manager checks the actually measured temperature the being measured separately, and adjusts the knob 20 to allow the actually measured temperature to conform to the calibration temperature.
  • the set-temperature manager re-presses the calibration offset button 18. Then, the control circuit 71 reads a temperature (second temperature T2) corresponding to a resistance value of the variable resistor 75 at that time, and stores a temperature difference (T1 - T2) as an offset value ⁇ T.
  • T2 is about 405°C
  • the offset value ⁇ T is about - 5°C. Then, the control circuit 71 terminates the calibration mode, and returns to a normal temperature control.
  • the control circuit 71 operates to add the offset value ⁇ T to a sensor temperature from the temperature sensor 4 to obtain a post-correction sensor temperature.
  • the pre-correction sensor temperature is about 400°C
  • the actual temperature Tr is 395°C.
  • a correction operation of adding the offset value ⁇ T ( - - 5°C) to the sensor temperature is performed to change the sensor temperature to about 395°C, so that post-correction sensor temperature becomes approximately equal to the actual temperature.
  • the correction for any other indicated set temperatures is performed using the same offset value ⁇ T.
  • the calibration temperature may be set at two or more points to appropriately perform the correction using a plurality of different offset values ⁇ T, depending on an indicated set temperature.
  • the set-temperature manager rotates the knob 20 to adjust the temperature scale 67 to a given set temperature, and then withdraws the temperature lock key 40.
  • An operator performs a solder handling operation at the set temperature. Subsequently, even if the knob 20 is rotated by the operator, it will undergo a lost motion, so that the set temperature cannot be changed or calibrated without permission.
  • a second embodiment of the present invention will be described below.
  • a body 10 is the same as that in the first embodiment.
  • a member having a function identical or equivalent to that of the member in the first embodiment is defined by a common reference numeral or code, and its duplicate description will be omitted.
  • FIG. 7 is a vertical sectional view of the temperature lock key 140.
  • the temperature lock key 140 primarily comprises a base end member 41, and a distal end member 150 prepared separately from the base end member 41.
  • the distal end member 150 is primarily different from the distal end member 50 in the first embodiment in that it is made of a relatively hard resin material, and the iron core 59 is not provided therein.
  • the distal end member 150 has a first distal end portion 52 located on the side of a most distal end of the temperature lock key 140, and a second distal end portion 153 located on the side of the base end member 41 relative to the first distal end portion 52.
  • a hole 151 is formed on a radially inward side of the first distal end portion 52, the second distal end portion 153 and a part of a distal end member-side base portion 54 to extend thereover.
  • FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7 .
  • an outer peripheral surface of the second distal end portion 153 has a generally octagonal shape.
  • the hole 151 is formed on a radially inward side of the second distal end portion 153 to penetrate therethrough.
  • the outer peripheral surface of the second distal end portion 153 may have any polygonal shape other than an 8-sided shape.
  • FIG. 9 is a sectional view taken along the line IX-IX in FIG. 7 . As shown in FIG. 9 , an axial region of the first distal end portion 52 is formed as the hole 151 without any iron core penetrating therethrough.
  • a selection between the temperature lock key 40 in the first embodiment and the temperature lock key 140 in the second embodiment may be made in comprehensive consideration of a required strength of the distal end member, a strength (of a resin portion) of the distal end member, cost, etc.
  • solder handling temperature controller which is designed to control a solder handling device including a soldering iron to have a given set temperature, under a condition that it is in connected relation with the solder handling device or incorporated in the solder handling device.
  • the solder handling temperature controller is characterized by comprising: a body of the solder handling temperature controller; a rotating shaft housed in the body and adapted to be rotatable about an axis thereof; a set temperature changing means adapted to change the set temperature according to a rotation angle of the rotating shaft; a rotary knob supported by the body in coaxial relation with the rotating shaft and in a rotatable manner relative to the rotating shaft; and a temperature lock key adapted to be selectively inserted into and withdrawable from the body in a position coaxial with the rotating shaft and the knob, and, in an inserted state thereof, to mechanically couple the rotating shaft and the knob together to allow them to be interlockingly rotated, wherein, in a state where the temperature lock key is withdrawn from the body, the coupling between the rotating shaft and the knob is released to prohibit the change of the set temperature by the rotation of the knob.
  • This makes it possible to easily perform the establishment and release of temperature lock simply by the insertion and withdrawal of the temperature lock key.
  • the temperature lock key includes: a base end member located on the side of one of axially opposed ends thereof, and adapted, in the inserted state, to be exposed; and a distal end member located on the side of the other end, and adapted, in the inserted state, to be sunk into a side of the body which includes the knob, wherein the base end member and the distal end member are rotatable relative to each other about an axis of the temperature lock key, and wherein the coupling between the rotating shaft and the knob is established through the distal end member.
  • the distal end member has a first distal end portion located on the side of a distalmost end of the temperature lock key, and a second distal end portion located on the side of the base end member relative to the first distal end portion, and wherein the first distal end portion is adapted, in the inserted state of the temperature lock key, to be coupled to the rotating shaft, and the second distal end portion is adapted, in the inserted state of the temperature lock key, to be coupled to the knob.
  • the solder handling temperature controller further comprises a scale board marked with a temperature scale and provided integrally and coaxially with the rotating shaft, wherein the scale board is adapted to be rotated integrally with the rotating shaft to indicate a set temperature according to the rotation angle of the rotating shaft, and wherein the first distal end portion is adapted, in the inserted state of the temperature lock key, to be coupled to the rotating shaft via the scale board.
  • the first distal end portion and one of the rotating shaft and the scale board are adapted, in the inserted state of the temperature lock key, to be coupled together through spline fitting by twenty or more spline grooves extending in an axial direction of the temperature lock key. This makes it possible to more effectively reduce shift of set temperature on inserting the temperature lock key.
  • the second distal end portion and the knob are adapted, in the inserted state of the temperature lock key, to be fitted and coupled together through fitting regions thereof having any one of six to ten-sided shapes in cross-section. This makes it possible to allow the second distal end portion and the knob to be adequately fitted together with a simple structure.
  • the solder handling temperature controller comprises: a scale board marked with a temperature scale and provided integrally and coaxially with the rotating shaft, wherein the scale board is adapted to be rotated integrally with the rotating shaft to indicate a set temperature according to the rotation angle of the rotating shaft; a control circuit adapted to receive information about a sensor temperature from a temperature sensor, provided in the solder handling device, operable to detect a temperature of a temperature control target portion wherein the control circuit is operable to execute a calibration mode for correcting a deviation between the set temperature indicated by the scale board, and an actual temperature of a controlled object; and a calibration switch adapted to be operated in the calibration mode, and wherein the control circuit is operable, in the calibration mode, to store, as an offset value, a difference between a controller-side set temperature at a time when the calibration switch is operated in a state just after the indicated set temperature is adjusted to a given calibration temperature, and a controller-side set temperature at a time when the calibration switch is operated in a state just after the rotating shaft is rotate
  • a set-temperature manager is a user different from an operator
  • an operation scheme for the controller 1 is not limited thereto.
  • an operator himself/herself may be a set-temperature manager.
  • the temperature lock key 40 or the temperature lock key 140 can be withdrawn to prevent a hand of a person or an object from accidentally touch the knob 20 to cause a change in the set temperature, or cause uncertainty in current set temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Mechanical Control Devices (AREA)
  • Control Of Resistance Heating (AREA)

Claims (7)

  1. Contrôleur de température de manipulation de brasure (1) conçu pour commander un dispositif de manipulation de brasure (2) incluant un fer à souder pour avoir une température définie donnée à condition qu'il soit connecté au dispositif de manipulation de brasure ou incorporé dans le dispositif de manipulation de brasure, le contrôleur de température de manipulation de brasure comprenant :
    un corps (10) du contrôleur de température de manipulation de brasure (1) ;
    un arbre rotatif (77) logé dans le corps et adapté à pouvoir tourner autour d'un axe de celui-ci ;
    un moyen de changement de température définie (75) adapté à changer la température définie en fonction d'un angle de rotation de l'arbre rotatif ;
    un bouton rotatif (20) supporté par le corps en relation coaxiale avec l'arbre rotatif (77) et de manière à pouvoir tourner par rapport à l'arbre rotatif ; et
    une clé de verrouillage de température (40) adaptée à être sélectivement insérée dans le et retirable du corps (10) dans une position coaxiale avec l'arbre rotatif (77) et le bouton (20), et, dans un état inséré de celle-ci, à raccorder mécaniquement l'arbre rotatif (77) et le bouton (20) ensemble pour leur permettre d'être tournés de manière verrouillable,
    dans lequel, dans un état où la clé de verrouillage de température (40) est retirée du corps (10), le raccordement entre l'arbre rotatif (77) et le bouton (20) est libéré pour empêcher un changement de la température définie par la rotation du bouton (20).
  2. Contrôleur de température de manipulation de brasure selon la revendication 1, dans lequel la clé de verrouillage de température (40) inclut : un élément d'extrémité de base (41) situé d'un côté d'une d'extrémités axialement opposées de celui-ci et adapté à être exposé dans l'état inséré ; et un élément d'extrémité distale (50) situé d'un côté de l'autre extrémité et adapté à être enfoncé dans le corps (10) qui inclut le bouton (20) dans l'état inséré, dans lequel l'élément d'extrémité de base (41) et l'élément d'extrémité distale (50) sont rotatifs l'un par rapport à l'autre autour d'un axe de la clé de verrouillage de température, et dans lequel le raccordement entre l'arbre rotatif et le bouton est établi à travers l'élément d'extrémité distale (50).
  3. Contrôleur de température de manipulation de brasure selon la revendication 1 ou 2, dans lequel l'élément d'extrémité distale (50) a une première portion d'extrémité distale (52) située sur une extrémité la plus distale de la clé de verrouillage de température (40) et une seconde portion d'extrémité distale (53) située d'un côté de l'élément d'extrémité de base par rapport à la première portion d'extrémité distale (52), et dans lequel la première portion d'extrémité distale (52) est adaptée à être raccordée à l'arbre rotatif (77) dans l'état inséré de la clé de verrouillage de température (40) et la seconde portion d'extrémité distale (53) est adaptée à être raccordée au bouton (20) dans l'état inséré de la clé de verrouillage de température.
  4. Contrôleur de température de manipulation de brasure selon la revendication 3, qui comprend en outre un tableau d'échelle (60) marqué d'une échelle de température et prévu de manière intégrale et coaxiale avec l'arbre rotatif (77), le tableau d'échelle (60) étant adapté à être tourné intégralement avec l'arbre rotatif (77) pour indiquer une température définie en fonction de l'angle de rotation de l'arbre rotatif, et dans lequel la première portion d'extrémité distale (52) est adaptée à être raccordée à l'arbre rotatif (77) par le biais du tableau d'échelle (60) dans l'état inséré de la clé de verrouillage de température.
  5. Contrôleur de température de manipulation de brasure selon la revendication 3 ou 4, dans lequel la première portion d'extrémité distale (52) et un de l'arbre rotatif (77) et du tableau d'échelle (60) sont adaptés à être raccordés ensemble à travers un moyeu à nervures par vingt rainures cannelées (65) ou plus s'étendant dans une direction axiale de la clé de verrouillage de température dans l'état inséré de la clé de verrouillage de température.
  6. Contrôleur de température de manipulation de brasure selon l'une quelconque des revendications 3 à 5, dans lequel la seconde portion d'extrémité distale (53) et le bouton (20) sont adaptés à être ajustés et raccordés ensemble à travers des régions d'ajustement (22) de ceux-ci ayant une forme quelconque parmi des formes à six à dix côtés en coupe transversale dans l'état inséré de la clé de verrouillage de température.
  7. Contrôleur de température de manipulation de brasure selon l'une quelconque des revendications 1 à 6, qui comprend en outre :
    un tableau d'échelle (60) marqué d'une échelle de température et prévu de manière intégrale et coaxiale avec l'arbre rotatif (77), le tableau d'échelle étant adapté à être tourné intégralement avec l'arbre rotatif pour indiquer une température définie en fonction de l'angle de rotation de l'arbre rotatif ;
    un circuit de commande (71) adapté à recevoir des informations concernant une température de capteur provenant d'un capteur de température (4) prévu dans le dispositif de manipulation de brasure, pouvant opérer pour détecter une température d'une portion cible de commande de température, le circuit de commande pouvant opérer pour exécuter un mode d'étalonnage afin de corriger un écart entre la température définie indiquée par le tableau d'échelle et une température réelle d'un objet commandé ; et
    un commutateur d'étalonnage (18) adapté à être opéré dans le mode d'étalonnage,
    et dans lequel le circuit de commande (71) peut opérer dans le mode d'étalonnage pour stocker comme valeur décalée une différence entre une température définie côté contrôleur à un moment où le commutateur d'étalonnage est opéré dans un état juste après que la température définie indiquée est ajustée à une température d'étalonnage donnée, et une température définie côté contrôleur à un moment où le commutateur d'étalonnage est opéré dans un état juste après que l'arbre rotatif est tourné de sorte que la température réelle est ajustée à la température d'étalonnage, et, au cours d'une commande de température après l'étalonnage, pour corriger la température de capteur en référence à la valeur décalée de manière à permettre à la température réelle de converger vers la température définie indiquée après l'ajustement.
EP07743387.8A 2007-05-15 2007-05-15 Dispositif de controle de la temperature d'une brasure avec un dispositif de verrouillage de la temperature Active EP2156915B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/059952 WO2008139623A1 (fr) 2007-05-15 2007-05-15 Dispositif de contrôle de la température pour la manipulation de brasure avec un dispositif de verrouillage de la température

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EP2156915A1 EP2156915A1 (fr) 2010-02-24
EP2156915A4 EP2156915A4 (fr) 2011-05-11
EP2156915B1 true EP2156915B1 (fr) 2013-10-23

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EP (1) EP2156915B1 (fr)
JP (1) JP5066181B2 (fr)
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WO (1) WO2008139623A1 (fr)

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Also Published As

Publication number Publication date
EP2156915A4 (fr) 2011-05-11
WO2008139623A1 (fr) 2008-11-20
CN101678492B (zh) 2011-12-14
JP5066181B2 (ja) 2012-11-07
US20100308102A1 (en) 2010-12-09
EP2156915A1 (fr) 2010-02-24
US7886954B2 (en) 2011-02-15
CN101678492A (zh) 2010-03-24
JPWO2008139623A1 (ja) 2010-07-29

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